What are terry covered foam applicators. I thought these only come in cotton?

To be more clear, Terry is the same fabric as a cotton towel. So, Terry is cotton. The applicators I'm talking about are made of foam but have a thin layer of cotton towel material covering them. I find the cotton helps spread the SG better. If you can't find any then go with regular foam or MF applicators. They will both work too. For me the Terry is just personal preference.